Which procedure is recommended for use unless otherwise specified in C117?

The recommended procedure, unless otherwise specified in the standard outlined by C117, is Procedure A. This procedure generally serves as the default method for the determination of certain properties in soil testing, ensuring a consistent and widely accepted approach. It is essential in laboratory testing for materials such as soils, since adopting a standard method helps maintain uniformity in results and enables comparison across different tests and projects.

When referring to standards like C117, it is common for specific procedures to be designed for particular types of testing or to cater to various conditions. However, Procedure A is frequently defaulted to because it provides a fundamental methodology that is applicable under a variety of conditions and is generally accepted in the field. Adopting this standard helps ensure that technicians and labs are working with a common understanding, which is crucial for reliability and accuracy in testing.